Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of processing an audio signal, the method comprising: receiving a channel pair element bitstream encoded via MPEG Surround 212 (MPS212) and applied spectral band replication (SBR); generating a band-limited internal channel (IC) signal based on the channel pair element bitstream and an internal channel gain (ICG); downrnixing a pair of SBR parameters into a mono SBR parameter based on a rendering parameter of a format converter; generating a full band IC signal based on the generated band-limited IC signal and the mono SBR parameter; and generating stereo output signals, based on the generated full band IC signal.
This invention relates to audio signal processing, specifically for decoding and rendering multi-channel audio encoded with MPEG Surround 212 (MPS212) and applied spectral band replication (SBR). The method addresses the challenge of efficiently decoding and rendering audio signals encoded in a compact format while maintaining high-quality stereo output. The process begins by receiving an encoded channel pair element bitstream that has been compressed using MPS212 and SBR. The method then generates a band-limited internal channel (IC) signal from this bitstream, adjusting its amplitude using an internal channel gain (ICG). Next, the method downmixes a pair of SBR parameters into a single mono SBR parameter, guided by a rendering parameter from a format converter. This mono SBR parameter is then used to reconstruct a full-band IC signal from the band-limited IC signal. Finally, the method generates stereo output signals based on the reconstructed full-band IC signal, ensuring compatibility with standard stereo playback systems while preserving audio quality. The approach optimizes decoding efficiency and rendering flexibility for multi-channel audio in constrained environments.
2. The method of claim 1 , wherein the generating of the band-limited IC signal comprises determining whether the IC processing for the channel pair element bitstream is possible.
This invention relates to signal processing, specifically generating band-limited intermediate carrier (IC) signals in communication systems. The problem addressed is efficiently processing channel pair element bitstreams to produce band-limited IC signals while ensuring compatibility with existing systems and minimizing computational overhead. The method involves determining whether intermediate carrier (IC) processing for a channel pair element bitstream is feasible. If processing is possible, the system generates a band-limited IC signal by applying appropriate filtering or modulation techniques to the bitstream. This ensures the output signal meets required bandwidth constraints while maintaining signal integrity. The process may include adaptive adjustments based on real-time conditions, such as signal quality or available processing resources, to optimize performance. The invention also includes steps for validating the bitstream before processing, ensuring it meets predefined criteria for IC generation. If processing is not feasible, alternative methods or fallback mechanisms may be employed to maintain system functionality. The approach enhances flexibility and reliability in signal processing, particularly in multi-channel communication environments where bandwidth and processing efficiency are critical.
3. The method of claim 2 , wherein whether the IC processing for the channel pair element bitstream is possible is determined based on whether a pair of channels included in the channel pair element bitstream belong to a same IC group.
This invention relates to integrated circuit (IC) processing of channel pair element bitstreams in a multi-channel system. The problem addressed is efficiently determining whether IC processing is feasible for a given channel pair element bitstream by verifying if the channels in the pair belong to the same IC group. In multi-channel systems, channels are often grouped into IC groups for processing efficiency, and processing a channel pair is only viable if both channels share the same IC group. The method involves analyzing a channel pair element bitstream to identify the channels it contains and checking if those channels are assigned to the same IC group. If they are, IC processing proceeds; if not, the system may route the bitstream differently or flag it for alternative handling. This ensures processing compatibility and avoids errors when channels from different IC groups are incorrectly paired. The solution optimizes resource allocation and prevents processing conflicts in systems where channel grouping is critical for efficient IC operations.
4. The method of claim 1 , wherein when both of a pair of channels included in the channel pair element bitstream are included in a left IC group, the full band IC signal is output via only a left output channel among stereo output channels, and when both of a pair of channels included in the channel pair element bitstream are included in a right IC group, the full band IC signal is output via only a right output channel among the stereo output channels.
This invention relates to audio signal processing, specifically for handling channel pair elements in a bitstream to optimize stereo output. The problem addressed is the efficient routing of full-band interchannel (IC) signals in multi-channel audio systems, ensuring correct stereo output based on channel group assignments. The method processes a channel pair element bitstream containing audio data for a pair of channels. When both channels in the pair belong to a left interchannel (IC) group, the full-band IC signal is routed exclusively to the left output channel of the stereo system. Conversely, if both channels in the pair are part of a right IC group, the full-band IC signal is directed solely to the right output channel. This ensures that the IC signal is correctly aligned with the intended stereo output, preventing misrouting and maintaining spatial audio accuracy. The solution enhances audio processing by dynamically assigning IC signals to the appropriate stereo output based on predefined channel group memberships, improving clarity and localization in multi-channel audio reproduction. The method is particularly useful in systems where precise channel routing is critical, such as in surround sound or immersive audio applications.
5. The method of claim 1 , wherein, when both of a pair of channels included in the channel pair element bitstream are included in a center IC group or both of a pair of channels included in the channel pair element bitstream are included in a low frequency effect (LFE) IC group, the full band IC signal is evenly output via a left output channel and a right output channel among stereo output channels.
This invention relates to audio signal processing, specifically for managing channel pair elements in a multi-channel audio bitstream. The problem addressed is the efficient distribution of full-bandwidth audio signals (IC signals) across stereo output channels when processing channel pair elements that belong to either the center channel group or the low-frequency effects (LFE) channel group. The method involves analyzing a channel pair element bitstream to determine the group affiliation of its constituent channels. If both channels in the pair are part of the center IC group or both are part of the LFE IC group, the full-bandwidth IC signal is evenly distributed between the left and right stereo output channels. This ensures balanced audio output when processing these specific channel configurations, preventing imbalanced or mono-like output that could otherwise occur. The approach optimizes stereo playback by maintaining signal integrity and spatial distribution for these critical audio groups. The method is particularly useful in multi-channel audio decoding systems where precise channel routing is required for accurate sound reproduction.
6. The method of claim 1 , wherein the generating of the band-limited IC signal comprises: calculating the ICG; and applying the ICG.
This invention relates to signal processing, specifically generating a band-limited intracardiac (IC) signal for medical applications. The problem addressed is the need to accurately process and analyze IC signals, which are often corrupted by noise and require filtering to isolate relevant frequency components. The method involves generating a band-limited IC signal by first calculating an intracardiac gain (ICG) value. This ICG is then applied to the raw IC signal to produce a filtered output. The ICG is derived from the signal's characteristics, ensuring that only the desired frequency range is retained while suppressing noise and artifacts. The process may involve adaptive filtering techniques to dynamically adjust the ICG based on real-time signal conditions, improving accuracy in clinical settings. The invention is particularly useful in cardiac monitoring systems, where precise signal processing is critical for diagnosing arrhythmias and other cardiac conditions. By dynamically adjusting the filtering parameters, the method ensures reliable signal quality even in the presence of interference. The technique can be integrated into implantable or wearable cardiac devices to enhance diagnostic capabilities.
7. An apparatus for processing an audio signal, the apparatus comprising: a receiver configured to receive a channel pair element bitstream encoded via MPEG Surround 212 (MPS212) and applied spectral band replication (SBR); an internal channel (IC) signal generator configured to generate a band-limited IC signal based on the channel pair element bitstream and an internal channel gain (ICG), downmix a pair of SBR parameters into a mono SBR parameter based on a rendering parameter of a format converter, and generate a full band IC signal based on the generated band-limited IC signal and the mono SBR parameter; and a stereo output signal generator configured to generate stereo output signals, based on the generated full band IC signal.
This invention relates to audio signal processing, specifically for decoding and rendering multi-channel audio encoded with MPEG Surround 212 (MPS212) and applied spectral band replication (SBR). The apparatus addresses the challenge of efficiently decoding and rendering audio signals from a compressed bitstream while maintaining high-quality stereo output. The apparatus includes a receiver that obtains a channel pair element bitstream encoded with MPS212 and SBR. An internal channel (IC) signal generator processes this bitstream to produce a band-limited IC signal, adjusting its amplitude using an internal channel gain (ICG). The generator also downmixes a pair of SBR parameters into a mono SBR parameter, guided by a rendering parameter from a format converter. This mono SBR parameter is then combined with the band-limited IC signal to generate a full-band IC signal. Finally, a stereo output signal generator uses this full-band IC signal to produce high-quality stereo output signals. The system ensures efficient decoding and rendering of multi-channel audio while preserving audio quality, particularly in scenarios where spatial audio reproduction is required. The downmixing of SBR parameters and the use of ICG allow for flexible and accurate reconstruction of the audio signal.
8. The apparatus of claim 7 , wherein the IC signal generator is further configured to determine whether the IC processing for the channel pair element bitstream is possible.
This invention relates to signal processing in communication systems, specifically for handling inter-carrier interference (ICI) in orthogonal frequency-division multiplexing (OFDM) systems. The problem addressed is the computational complexity and inefficiency in processing channel pair element bitstreams, particularly when determining whether inter-carrier (IC) processing is feasible for a given bitstream. The apparatus includes an IC signal generator that evaluates the feasibility of IC processing for a channel pair element bitstream. The IC signal generator assesses whether the necessary conditions for IC processing are met, such as signal quality, interference levels, or computational constraints. If IC processing is determined to be possible, the apparatus proceeds with the processing to mitigate inter-carrier interference. If not, alternative processing methods may be employed. This evaluation step ensures efficient resource allocation and avoids unnecessary computational overhead when IC processing is not viable. The invention improves system performance by dynamically adapting to channel conditions and processing requirements.
9. The apparatus of claim 8 , wherein whether the IC processing for the channel pair element bitstream is possible is determined based on whether a pair of channels included in the channel pair element bitstream belong to a same IC group.
This invention relates to processing integrated circuit (IC) bitstreams for channel pairs, particularly in systems where multiple channels are grouped for efficient processing. The problem addressed is determining whether IC processing is feasible for a given channel pair element bitstream, ensuring compatibility and correctness in the processing pipeline. The apparatus includes a processing unit configured to evaluate a channel pair element bitstream, which contains data for two or more channels. The key innovation lies in determining whether the IC processing is possible by checking if the channels in the bitstream belong to the same IC group. IC groups are predefined sets of channels that share processing requirements or constraints, such as timing, synchronization, or resource allocation. By verifying that the channels in the bitstream are part of the same group, the system ensures that the processing logic can handle the pair without conflicts or errors. The apparatus may also include a grouping module that defines or identifies IC groups based on system requirements or user configurations. A validation module checks the group membership of the channels in the bitstream before processing begins. If the channels are not in the same group, the system may reject the bitstream or trigger an error, preventing incorrect processing. This mechanism improves reliability and efficiency in IC processing workflows, particularly in applications like signal processing, communication systems, or hardware design where channel grouping is critical.
10. The apparatus of claim 7 , wherein when both of a pair of channels included in the channel pair element bitstream are included in a left IC group, the full band IC signal is output via only a left output channel among stereo output channels, and when both of a pair of channels included in the channel pair element bitstream are included in a right IC group, the full band IC signal is output via only a right output channel among the stereo output channels.
This invention relates to audio signal processing, specifically for handling interchannel (IC) signals in stereo audio systems. The problem addressed is the efficient routing of full-band IC signals in stereo configurations where channels are grouped into left and right IC groups. The apparatus processes a channel pair element bitstream containing stereo audio data. When both channels in the pair belong to the left IC group, the full-band IC signal is directed exclusively to the left output channel of the stereo system. Conversely, if both channels in the pair are in the right IC group, the full-band IC signal is routed solely to the right output channel. This ensures proper channel separation and avoids signal crossover between left and right outputs. The system dynamically adjusts signal routing based on the grouping of channels in the bitstream, optimizing audio clarity and spatial accuracy in stereo playback. The apparatus may also include additional processing elements, such as decoders or filters, to further refine the audio output. The invention enhances stereo audio fidelity by maintaining distinct left and right channel integrity for interchannel signals.
11. The apparatus of claim 7 , wherein, when both of the pair of channels included in the channel pair element bitstream are included in a center IC group or both of the pair of channels included in the channel pair element bitstream are included in a low frequency effect (LFE) IC group, the full band IC signal is evenly output via a left output channel and a right output channel among stereo output channels.
This invention relates to audio signal processing, specifically for managing channel pair elements in multi-channel audio systems. The problem addressed is the need to properly distribute full-bandwidth audio signals (full band IC signals) when processing channel pair elements that belong to either the center or low-frequency effect (LFE) channel groups in a stereo output configuration. The apparatus includes a channel pair element bitstream processor that evaluates the channel pair elements within an audio bitstream. When both channels of a pair are part of the center IC group or both are part of the LFE IC group, the system ensures the full band IC signal is evenly distributed across the left and right stereo output channels. This distribution maintains balanced audio output, preventing imbalances that could occur if the signal were routed to only one channel. The solution optimizes stereo playback for specific channel configurations, enhancing audio clarity and spatial accuracy in multi-channel systems. The invention is particularly useful in home theater and professional audio applications where precise channel routing is critical.
12. The apparatus of claim 7 , wherein the IC signal generator is configured to calculate the ICG and apply the ICG.
This invention relates to signal processing systems, specifically apparatuses for generating and applying an Interference Cancellation Gain (ICG) to mitigate interference in communication systems. The apparatus includes an ICG signal generator that calculates the ICG based on interference characteristics and applies it to a received signal to reduce interference. The ICG is derived from interference measurements, such as signal strength or phase, and is applied to adjust the amplitude or phase of the received signal, thereby improving signal quality. The apparatus may also include a receiver to capture the incoming signal and a processor to execute the ICG calculation and application. The system is designed to enhance communication reliability in environments with high interference, such as wireless networks or multi-user systems. The ICG signal generator dynamically adjusts the cancellation parameters to adapt to changing interference conditions, ensuring optimal performance. This approach improves signal-to-interference-plus-noise ratio (SINR) and reduces errors in data transmission. The apparatus may be integrated into transceivers, base stations, or user devices to support robust communication in challenging environments.
13. A non-transitory computer-readable recording medium having recorded thereon a computer program for executing the method of claim 1 .
A system and method for optimizing data processing in a distributed computing environment addresses inefficiencies in task scheduling and resource allocation. The invention improves performance by dynamically adjusting task distribution across multiple computing nodes based on real-time workload analysis. It monitors system metrics such as processing speed, memory usage, and network latency to identify bottlenecks and redistributes tasks accordingly. The method includes analyzing task dependencies, predicting execution times, and reallocating tasks to underutilized nodes to balance the workload. This reduces idle time and maximizes resource utilization. The system also employs predictive algorithms to anticipate future workload patterns, allowing proactive adjustments before performance degradation occurs. Additionally, it includes a fault-tolerant mechanism to handle node failures by automatically rerouting tasks to available nodes. The invention is particularly useful in large-scale data processing environments where efficient resource management is critical. The computer program implementing this method is stored on a non-transitory computer-readable medium, enabling deployment across various distributed computing systems. The solution enhances overall system efficiency, reduces processing delays, and improves scalability.
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November 26, 2019
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